Getty Images/Carl Court The Queen just delivered a statement to the victims and those affected by the London attack, which has resulted in the death of four people and left more than 40 others injured.

She was due to officially open the new Scotland Yard building on Victoria Embankment on Thursday but was forced to cancel her visit after Wednesday's events.

In a statement to the Acting Commissioner of the Metropolitan Police Craig Mackey, she said she was sorry her and Prince Philip were unable to open the new building as planned.

The Queen added that her "thoughts, prayers, and deepest sympathy" are with those who were affected by Wednesday's "awful violence."

Her full statement was tweeted by the Press Association here:

Metropolitan Police confirmed it raided six addresses during the early hours of Thursday morning and made eight arrests in connection to the attack in Westminster.

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